Sulfuric Acid → HCID 57433654, compound

Participants

Reaction Conditions

Reaction Steps

To a mixture of 6-(3-cyanophenyl)-imidazo[2,1-b]thiazole (5.50 g, 24.4 mmol) and acetic anhydride (50 mL) was added 0.6 mL of concentrated sulfuric acid. The reaction mixture was heated at 135° C. for 5 hours. After cooling to room temperature, the reaction mixture was diluted with dichloromethane (100 mL), washed with water (50 mL×2), saturated aqueous sodium bicarbonate solution (50 mL×2), water (50 mL), dried over sodium sulfate, filtered and concentrated in vacuo. Product was purified by flash chromatography on silica gel eluting with 40% ethyl acetate in hexane to yield 4.8 g (74%) of the title compound as a light yellow solid. LCMS: 268 [M+H].

Provenance & Evidence